Doctor profile · Federal record
Dr. Ryan Longfellow, MD
Anesthesiology Physician (CMS: Anesthesiology) · Anesthesiology Physician · Anesthesiology Physician · Pain Medicine (Anesthesiology) Physician · Madison, WI
- NPI 1356768683
- Accepts Medicare
- 12 yrs in practice
- Licensed in 3 states
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 3 locations .
- Primary practice
-
600 Highland Ave
Madison, WI 537921902
(608) 263-8100
fax (608) 262-6247 - Additional location
-
10525 W 124Th Ave
Cedar Lake, IN 463039275
(219) 805-1484 - Additional location
-
5165 McCarty Ln
Lafayette, IN 479058764
(765) 448-8000
fax (765) 446-4695 - Mailing address
-
7974 Uw Health CT
Middleton, WI 535625531
Credentials & registration
- NPI registered
- March 2014 — 12 yrs on file
- Profile last updated
- May 27, 2025
- Year of graduation
- 2014 — 12 yrs since
- Specialty taxonomy
- 207L00000X — NUCC code
- State licenses (3)
- Wisconsin #81042 · Indiana #01086496A · Alaska #143984
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1356768683. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
93
Distinct HCPCS
4
Medicare allowed
$7,497
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
00731 |
Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope | 36 | 33 | $80 | |
00811 |
Anesthesia for other procedure on large bowel using an endoscope | 34 | 34 | $58 | |
00732 |
Anesthesia for procedure on gallbladder, pancreas, or liver using an endoscope | 12 | 11 | $97 | |
00145 |
Anesthesia for retinal surgery | 11 | 11 | $135 |
In context: peer comparison
Among 44 peers in this city , average services per provider: 25. This provider delivers 3.7× the peer median.Frequently asked questions
What is Dr. Ryan Longfellow's medical specialty?
Dr. Ryan Longfellow practices Anesthesiology Physician in Madison, WI.
Where does Dr. Ryan Longfellow practice?
Dr. Ryan Longfellow practices at 600 Highland Ave, Madison, WI 537921902. Office phone: 6082638100.
What is Dr. Ryan Longfellow's NPI?
Dr. Ryan Longfellow's National Provider Identifier (NPI) is 1356768683, issued by NPPES.
Does Dr. Ryan Longfellow accept Medicare assignment?
Yes. Dr. Ryan Longfellow accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Ryan Longfellow commonly perform?
Top Medicare-reported procedures in 2023: Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (HCPCS 00731); Anesthesia for other procedure on large bowel using an endoscope (HCPCS 00811); Anesthesia for procedure on gallbladder, pancreas, or liver using an endoscope (HCPCS 00732). Source: CMS Medicare Physician & Other Practitioners file.